Register Now

Crashtestheli · 08-07-2012, 09:44 PM

If I run less than about 2600rpm I get the shakes. 75% throttle 3700 kv motor.
Mild 3D settings.
Should I lower the gains or run the higher head speed?
Right now I am running higher hs

Dr. M · 08-07-2012, 10:12 PM

Gain-induced oscillations happen at higher HS. Low-HS wobbles are caused by dampers being too stiff, cannot be cured by decreasing gain, only by increasing HS, or switching to softer dampers.

Crashtestheli · 08-09-2012, 04:27 PM

what a fantastic post!
thank you very much

08-07-2012, 09:44 PM	#1 (permalink)
Crashtestheli Registered Users Join Date: Jan 2012	Lower head speed = wobbles If I run less than about 2600rpm I get the shakes. 75% throttle 3700 kv motor. Mild 3D settings. Should I lower the gains or run the higher head speed? Right now I am running higher hs

08-07-2012, 10:12 PM	#2 (permalink)
Dr. M Registered Users My HF Map location Join Date: Jun 2011	Gain-induced oscillations happen at higher HS. Low-HS wobbles are caused by dampers being too stiff, cannot be cured by decreasing gain, only by increasing HS, or switching to softer dampers. __________________ CopterX 450 Black Angel FBL "Night Rig" \| ZYX v4.0 PRÔTOS 500 FBL "Sky Whip" \| Robird G31 Audacity P6 FBL "Phoenix" \| MSH Brain \| 12s Goblin Speed \| iKon

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

08-09-2012, 04:27 PM	#3 (permalink)
Crashtestheli Registered Users Thread Starter Join Date: Jan 2012	what a fantastic post! thank you very much

Register Now

Log-in